basic conversion thing do worky!!!

crates/executor/Cargo.toml

@@ -6,3 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+clap = { workspace = true, features = [ "derive" ] }
+image = "0.24"
+rpl = { path = "../rpl" }

crates/executor/src/cpu/mod.rs

@@ -0,0 +1 @@
+pub(crate) struct CpuExecutor;

crates/executor/src/debug/instructions/mod.rs

@@ -0,0 +1,30 @@
+pub mod Read {
+    use image::{io::Reader as ImageReader, DynamicImage};
+    use rpl::instructions::read::{Read, SourceType};
+
+    pub fn read(Read { source, format }: Read) -> DynamicImage {
+        let mut img = ImageReader::open(match source {
+            SourceType::File(path) => path,
+        })
+        .expect("something went wrong :(((");
+
+        img.decode().expect("couldn't decode image")
+    }
+}
+
+pub mod Write {
+    use image::{io::Reader as ImageReader, DynamicImage, ImageFormat};
+    use rpl::instructions::write::{TargetFormat, TargetType, Write};
+
+    pub fn write(Write { target, format }: Write, input_data: DynamicImage) {
+        input_data.save_with_format(
+            match target {
+                TargetType::File(path) => path,
+            },
+            match format {
+                TargetFormat::Jpeg => ImageFormat::Jpeg,
+                TargetFormat::Png => ImageFormat::Png,
+            },
+        );
+    }
+}

crates/executor/src/debug/mod.rs

@@ -0,0 +1,30 @@
+use crate::{value::DynamicValue, Executor};
+mod instructions;
+
+pub struct DebugExecutor;
+
+impl Executor for DebugExecutor {
+    fn execute(
+        instruction: rpl::instructions::Instruction,
+        input: Option<DynamicValue>,
+    ) -> Option<DynamicValue> {
+        match instruction {
+            rpl::instructions::Instruction::Read(read_instruction) => Some(DynamicValue::Image(
+                instructions::Read::read(read_instruction),
+            )),
+            rpl::instructions::Instruction::Write(write_instruction) => {
+                instructions::Write::write(
+                    write_instruction,
+                    match input {
+                        Some(DynamicValue::Image(img)) => img,
+                        _ => panic!("awawwawwa"),
+                    },
+                );
+                None
+            }
+            rpl::instructions::Instruction::Math(_) => todo!(),
+            rpl::instructions::Instruction::Blend(_) => todo!(),
+            rpl::instructions::Instruction::Noise(_) => todo!(),
+        }
+    }
+}

crates/executor/src/lib.rs

@@ -1,14 +1,38 @@
-pub fn add(left: usize, right: usize) -> usize {
-    left + right
+use rpl::instructions::Instruction;
+use value::DynamicValue;
+
+mod debug;
+mod value;
+
+/// The available executors
+/// unused in early dev.
+#[derive(Debug, Clone, Copy, clap::ValueEnum)]
+pub enum Executors {
+    /// the debug executor is single threaded and really, *really* slow. And unstable. Don't use. Unless you're a dev working on this.
+    Debug,
+    /// the CPU executor primarily uses the CPU. Most likely most feature complete, and the fallback.
+    Cpu,
+    /// the Vulkan executor (obviously) uses vulkan. there's a good chance this isn't implemented yet as you're reading this.
+    Vulkan,
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+trait Executor {
+    fn execute(instruction: Instruction, input: Option<DynamicValue>) -> Option<DynamicValue>;
+}
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
+pub fn execute_all(instructions: Vec<Instruction>) {
+    let mut tmp = None;
+
+    for instruction in instructions {
+        tmp = debug::DebugExecutor::execute(instruction, tmp);
     }
 }
+
+// scratchpad lol:
+// execution structure:
+// 1. take in rpl
+// 2. analyse/validate structure against allowed executors
+// 3. assign executors to instructions
+// 4. optimize
+// 5. prepare memory management patterns
+// 6. run

crates/executor/src/value/mod.rs

@@ -0,0 +1,5 @@
+use image::DynamicImage;
+
+pub enum DynamicValue {
+    Image(DynamicImage),
+}